#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
size_t my_strlen(const char* arr)
{
	int count=0;
	while (*arr)
	{
		arr++;
		count++;
	}
	return count;

}
int main()
{
	char arr[] = "asdf c word";
	printf("%zu",my_strlen(arr));
}